Finding the end of the yarn?

OK, I have a silly question. I've been doing a little more knitting lately and starting some new projects since I'm finishing old ones. How on earth do you find the end of the ball of yarn? Is there a trick to it that I don't know? I can usually find the outside one, but the inside one is much harder. My reference books are no help, which makes me think it should be self-explanatory...but somehow it's not.

Quite often what knitters I know do is, even if it comes wound in a ball instead of in a loose skein (which is better for the yarn by the way, the loose skein for storage), they rewind the yarn to a center pull ball themselves. That way you know where both ends are. :)

I made something out of what was allegedly a center-pull ball, and the thing kept knotting and tangling. Was I doing something wrong, or was the ball wound wrong? This has happened twice, but I've also done it successfully before and don't think I did anything different.

Most Lion Brand yarns come in "pull skeins" or "center pull balls". These include balls like Vanna's Choice, Wool-Ease, Babysoft, Pound of Love, and similarly shaped oblong balls. It also includes skeins like Homespun and Amazing. It also includes "cake" shapes like LB Collection Silk Mohair or LB Collection Baby Alpaca.

All skeins have an outside end that allows you to begin work by unrolling the yarn from the outside. You can begin knitting or crocheting from the outside, wind it into a ball by hand, or use a wool winder to make a pull skein. However, many people prefer to pull from the center as it can keep the ball neater.

If you don't want to work from the outside end, please follow these steps to find the center "pull" or "end" of the ball:
1. Pull out the end of the yarn which is visible from the outside of the ball, which has been tucked into the ball. This is important, as it may get caught on your inner end, if you do not remove it, and cause tangling later.
2. Go to the opposite end of the ball from which that outside end was tucked, and insert the thumb and index finger of each hand into either side of the skein, compressing the skein between your fingers until they meet.
3. Feel for the very center. Pull this out and the end should be with it.
4. Extra yarn will usually come out with it but is quickly used up. You can also wrap the excess yarn around the outside of the ball (to keep it neat) until you find the center "end" of the yarn.
5. Start working from this end.

Thank you, thank you, to the person who posted the way to "look" (feel) for the center, in order to find the end of the yarn from the middle of the skein. This was making me crazy, and I knew there had to be a way to do it.